test/libapt/stringview_test.cc

   1 #if !(defined APT_PKG_EXPOSE_STRING_VIEW)
   2         #define APT_PKG_EXPOSE_STRING_VIEW
   3 #endif
   4
   5 #include <config.h>
   6 #include <apt-pkg/string_view.h>
   7 #include <string>
   8
   9 #include <type_traits>
  10
  11 #include <gtest/gtest.h>
  12
  13 TEST(StringViewTest,EmptyString)
  14 {
  15    constexpr APT::StringView defString;
  16    static_assert( 0 == defString.length(), "def right size");
  17
  18    APT::StringView strString{std::string{}};
  19    EXPECT_EQ(0, strString.length());
  20
  21    constexpr char const * const charp = "";
  22    constexpr APT::StringView charpString{charp, 0};
  23    static_assert( 0 == charpString.length(), "charp right size");
  24
  25    APT::StringView charp2String{charp};
  26    EXPECT_EQ(0, strString.length());
  27
  28    const APT::StringView charaString{""};
  29    EXPECT_EQ(0, charaString.length());
  30
  31    EXPECT_TRUE(APT::StringView("") == "");
  32    EXPECT_FALSE(APT::StringView("") != "");
  33 }
  34
  35 TEST(StringViewTest,FooString)
  36 {
  37    constexpr APT::StringView defString("fooGARBAGE", 3);
  38    static_assert( 3 == defString.length(), "def right size");
  39    EXPECT_EQ(0, defString.to_string().compare(0, defString.length(), defString.data(), 3));
  40
  41    APT::StringView strString{std::string{"foo"}};
  42    EXPECT_EQ(3, strString.length());
  43    EXPECT_EQ(0, strString.to_string().compare(0, strString.length(), strString.data(), 3));
  44
  45    constexpr char const * const charp = "fooGARBAGE";
  46    constexpr APT::StringView charpString{charp, 3};
  47    EXPECT_EQ(3, charpString.length());
  48    EXPECT_EQ(0, charpString.to_string().compare(0, charpString.length(), charpString.data(), 3));
  49
  50    char * charp2 = strdup("foo");
  51    APT::StringView charp2String{charp2};
  52    EXPECT_EQ(3, charp2String.length());
  53    EXPECT_EQ(0, charp2String.to_string().compare(0, charp2String.length(), charp2String.data(), 3));
  54    free(charp2);
  55
  56    const APT::StringView charaString{"foo"};
  57    EXPECT_EQ(3, charaString.length());
  58    EXPECT_EQ(0, charaString.to_string().compare(0, charaString.length(), charaString.data(), 3));
  59
  60    EXPECT_TRUE(APT::StringView("foo") == "foo");
  61    EXPECT_FALSE(APT::StringView("foo") != "foo");
  62 }
  63
  64 TEST(StringViewTest,SubStr)
  65 {
  66    const APT::StringView defString("Hello World!");
  67    EXPECT_EQ(defString.to_string().substr(6), defString.substr(6).to_string());
  68    EXPECT_EQ(defString.to_string().substr(0,5), defString.substr(0,5).to_string());
  69    EXPECT_EQ(defString.to_string().substr(6,5), defString.substr(6,5).to_string());
  70 }
  71
  72 TEST(StringViewTest,Find)
  73 {
  74    const APT::StringView defString("Hello World!");
  75    EXPECT_EQ(defString.to_string().find('l'), defString.find('l'));
  76    EXPECT_EQ(defString.to_string().find('X'), defString.find('X'));
  77    EXPECT_EQ(defString.to_string().find('e',3), defString.find('e',3));
  78    EXPECT_EQ(defString.to_string().find('l',6), defString.find('l',6));
  79    EXPECT_EQ(defString.to_string().find('l',11), defString.find('l',11));
  80 }
  81
  82 TEST(StringViewTest,RFind)
  83 {
  84    const APT::StringView defString("Hello World!");
  85    EXPECT_EQ(defString.to_string().rfind('l'), defString.rfind('l'));
  86    EXPECT_EQ(defString.to_string().rfind('X'), defString.rfind('X'));
  87    EXPECT_EQ(defString.to_string().rfind('e',3), defString.rfind('e',3));
  88    EXPECT_EQ(defString.to_string().rfind('l',6), defString.rfind('l',6));
  89    EXPECT_EQ(defString.to_string().rfind('l',11), defString.rfind('l',11));
  90 }